— are you looking for? — The key to my bike.A. WhereB. Who C. What D. When

问题补充：

— are you looking for?

— The key to my bike.

A. Where

B. Who

C. What

D. When

答案：

A. Where

B. Who

(答案→)C. What

D. When

解析：考查特殊疑问词。句意：----你正在找什么？-----我自行车的钥匙。What 做look for的宾语，故选what。